CN219454317U - Evaporator with cascade structure - Google Patents
Evaporator with cascade structure Download PDFInfo
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- CN219454317U CN219454317U CN202223541155.5U CN202223541155U CN219454317U CN 219454317 U CN219454317 U CN 219454317U CN 202223541155 U CN202223541155 U CN 202223541155U CN 219454317 U CN219454317 U CN 219454317U
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- heat exchanger
- evaporator
- liquid
- distribution pipes
- liquid distribution
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Abstract
The utility model discloses an evaporator with a cascade structure. The evaporator comprises a first heat exchanger, the input end of the first heat exchanger is connected with one ends of a plurality of first liquid distribution pipes, the other ends of the first liquid distribution pipes are connected with a first liquid distributor, the first liquid distributor is connected with a refrigerant inlet pipe, the output end of the first heat exchanger is connected with a second liquid distributor, the second liquid distributor is connected with one ends of a plurality of second liquid distribution pipes, the other ends of the second liquid distribution pipes are connected with the input ends of a second heat exchanger, the output ends of the second heat exchanger are connected with a refrigerant outlet pipe, and the second heat exchanger is positioned at the front side of the first heat exchanger under the use state. According to the utility model, the evaporator is divided into two parts, and different loop numbers are set according to the state of the refrigerant, so that useless gasification resistance can be effectively reduced, and the effective heat exchange capacity of the evaporator is increased.
Description
Technical Field
The utility model relates to the technical field of evaporators, in particular to an evaporator with a cascade structure.
Background
In the field of large enthalpy difference fresh air dehumidification, as the fresh air unit is applied to a temperature and humidity control air conditioning system, the fresh air unit needs to bear all wet load, the depth of humidity treatment is required to be deeper, and the direct expansion system is required to directly treat the fresh air unit on the site without a cold water source, so that the heat exchange capacity of evaporators with a cascade structure is required to be sufficient, and the depth of discharge is generally increased, but the flow of the evaporators with the cascade structure is generally from a liquid inlet to a pipeline for completely gasifying the evaporator into gas, and the volume and the flow performance of a refrigerant in liquid state and gas state are different.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides an evaporator with a cascade structure.
In order to achieve the above object, the present utility model provides an evaporator with a cascade structure, which is characterized by comprising a first heat exchanger, wherein an input end of the first heat exchanger is connected with one ends of a plurality of first liquid distribution pipes, the other ends of the first liquid distribution pipes are connected with first liquid distributors, the first liquid distributors are connected with refrigerant inlet pipes, an output end of the first heat exchanger is connected with a second liquid distributor, the second liquid distributors are connected with one ends of a plurality of second liquid distribution pipes, the other ends of the second liquid distribution pipes are connected with an input end of the second heat exchanger, an output end of the second heat exchanger is connected with a refrigerant outlet pipe, and the second heat exchanger is positioned at the front side of the first heat exchanger in a use state.
Further, the number of the first liquid separating pipes is smaller than the number of the second liquid separating pipes.
The beneficial effects are that: according to the utility model, the evaporator is divided into two parts, and different loop numbers are set according to the state of the refrigerant, so that useless gasification resistance can be effectively reduced, and the effective heat exchange capacity of the evaporator is increased.
Drawings
Fig. 1 is a schematic structural view of an evaporator of a cascade structure according to an embodiment of the present utility model.
Detailed Description
The utility model will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the utility model, it being understood that these examples are only intended to illustrate the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1, the embodiment of the utility model provides an evaporator with a cascade structure, which comprises a first heat exchanger 3, wherein the input end of the first heat exchanger 3 is connected with one ends of a plurality of first liquid distribution pipes 2, the other ends of the first liquid distribution pipes 2 are connected with a first liquid distributor 1, the first liquid distributor 1 is connected with a refrigerant inlet pipe 100, the output end of the first heat exchanger 2 is connected with a second liquid distributor 4, the second liquid distributor 4 is connected with one ends of a plurality of second liquid distribution pipes 5, the other ends of the second liquid distribution pipes 5 are connected with the input ends of a second heat exchanger 6, the output ends of the second heat exchanger 6 are connected with a refrigerant outlet pipe 200, and in a use state, the second heat exchanger 6 is positioned at the front side of the first heat exchanger 3 by flowing air flow from front to back. Namely, the airflow direction is as follows: the air inlet side, the second heat exchanger 6, the first heat exchanger 3 and the air supply side.
The number of first liquid distribution pipes 3 is smaller than the number of second liquid distribution pipes 5 in the embodiment of the utility model. Correspondingly, the number of liquid separating holes of the first liquid separator 1 is smaller than that of the second liquid separator 4.
When in use, the first heat exchanger 3 is mainly used for liquid heat exchange of the refrigerant, and the second heat exchanger 6 is mainly used for heat exchange of the refrigerant in a gas-liquid coexisting state. Depending on the refrigerant characteristics, the first partial heat exchanger 3 loop flow rate is lower than the second partial heat exchanger 6 loop flow rate. In the use state, the loops of the first heat exchanger 3 and the loops of the second heat exchanger 6 are matched with the load, and the loops are in the complete gasification state before entering the refrigerant outlet pipe 200 at the rear side of the second heat exchanger 6.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to a person of ordinary skill in the art. Modifications and alterations may be made without departing from the principles of this utility model, and such modifications and alterations should also be considered as being within the scope of the utility model.
Claims (2)
1. The utility model provides an evaporator of cascade structure, its characterized in that includes first heat exchanger, the input of first heat exchanger is connected with the one end of a plurality of first knockout tube, the other end of first knockout tube all is connected with first knockout, first knockout is connected with the refrigerant advances the union coupling, the output of first heat exchanger is connected with the second knockout, the second knockout is connected with the one end of a plurality of second knockout tubes, the other end of second knockout tube all is connected with the input of second heat exchanger, the output and the refrigerant exit tube connection of second heat exchanger, the second heat exchanger is located the front side of first heat exchanger under the user state.
2. The evaporator of claim 1, wherein the number of first liquid distribution pipes is less than the number of second liquid distribution pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223541155.5U CN219454317U (en) | 2022-12-29 | 2022-12-29 | Evaporator with cascade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223541155.5U CN219454317U (en) | 2022-12-29 | 2022-12-29 | Evaporator with cascade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219454317U true CN219454317U (en) | 2023-08-01 |
Family
ID=87386477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223541155.5U Active CN219454317U (en) | 2022-12-29 | 2022-12-29 | Evaporator with cascade structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219454317U (en) |
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2022
- 2022-12-29 CN CN202223541155.5U patent/CN219454317U/en active Active
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